<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #d1{
            color: red;
        }
        p{
            color: green !important;
        }
        #p1{color: blue}
    </style>
</head>
<body>
    <p id="p1">p1</p>
    <div id="d1">
        <p>p2</p>
        <span>span</span>
        <a href="">超链接</a>
    </div>
</body>
</html>